Find the last 4 digits (ZIP+4) for an address in 21111

ZIP 21111, Monkton, MD is filled in. Just type the street address.

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ZIP Code 21111 – Monkton, MD

Monkton, Maryland · Baltimore County · Eastern time

ZIP code21111
CityMonkton
StateMaryland
CountyBaltimore CountyHarford County
Population4,714
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area35.35 sq mi
Center (lat, long)39.5755, -76.5897

Area codes in this area

410443667

These are the area codes that most often serve ZIP 21111 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

21131 Phoenix · 4.9 mi21152 Sparks Glencoe · 5.3 mi21161 White Hall · 6 mi21120 Parkton · 6.7 mi21013 Baldwin · 6.9 mi21065 Hunt Valley · 6.9 mi21084 Jarrettsville · 7.1 mi21031 Hunt Valley · 7.1 mi

About ZIP 21111

ZIP code 21111 is assigned to Monkton, Maryland. It crosses 2 counties; most of its land is in Baltimore County. Its Census area covers about 35.35 square miles of land. The closest neighboring ZIP is 21131 (Phoenix), about 4.9 miles away.

Every address in 21111 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources